For advice regarding practicing the Om Technique, I suggest contacting SRF (Self Realization Fellowship) Mother Center either by phone or snail mail. If your going to Convocation in August, there are monastics there available for counseling. I think the monastics at SRF are the experts and the best for counseling and giving advice on the SRF techniques.

Regarding what you say about finding silence in today's world, it is challenging. When I'm driving many times I drive with no music and quickly put the window up when I hear other people's music. In my house I usually have no music on nor tv. I really like silence. I hope this helps.